sleepphone-cable-box: add brace

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/sleepphone-cable-box.scad b/sleepphone-cable-box.scad
index e1f018224b379f28e24e6a0d1e1d0468dd9314ab..040e50d212cbb3d25f0050a31fc08ecba021dc45 100644 (file)
--- a/sleepphone-cable-box.scad
+++ b/sleepphone-cable-box.scad
@@ -22,6 +22,8 @@ button_dy_outer = 28.42;
 button_dy_inner = 19.05;
 button_dy_centre = 5.65;
 
+nrbutton_brace_x = 37.5;
+
 phone_slop = 0.5 * [1,1,0]
            + 0.5 * [0,0,1];
 
@@ -95,6 +97,48 @@ module MainProfile(){
   }
 }
 
+module BraceProfileInitial(){
+  p = phone + phone_slop;
+  pbo = p[2] + button_dz_outer;
+  pbc = p[2] + button_dz_centre;
+  polygon([[ button_dy_outer/2 + 0.2,  p[2]           ],
+          [ button_dy_outer/2 + 0.2,  pbo  + wall[2] ],
+          [ button_dy_outer/2      ,  pbo  + wall[2] ],
+          [ button_dy_outer/2      ,  p[2]           ],
+          ]);
+}  
+
+module BraceProfileFinal(){
+  p = phone + phone_slop;
+  pbo = p[2] + button_dz_outer;
+  pbc = p[2] + button_dz_centre;
+  polygon([[ -1,                       p[2]           ],
+          [ -1,                       pbc  + wall[2] ],
+          [ 0,                        pbc  + wall[2] ],
+          [ 0,                        p[2]           ]
+          ]);
+}  
+
+module Brace(){
+  for (m=[0,1]) mirror([0,m,0]) {
+      hull(){
+       for (e=[0,1]) {
+         translate([ nrbutton_brace_x + e * phone[1]/2,
+                     0, 0 ]){
+           rotate([ 90,0,90 ]){
+             linear_extrude(height= (e==0 ? wall[0] : 0.1)){
+               hull(){
+                 BraceProfileInitial();
+                 if (e==0) BraceProfileFinal();
+             }
+             }
+           }
+         }
+       }
+      }
+    }
+}
+
 module BoxMain(){
   rotate([0,0,90]) rotate([90,0,0]) {
     translate([0,0, expose])
@@ -145,7 +189,10 @@ module Box(){
   sidewall_cutout_z = phone[2] + phone_slop[2] + button_dz_outer;
 
   difference(){
-    BoxMain();
+    union(){
+      BoxMain();
+      Brace();
+    }
 
     translate([ led[0], phone[1]/2 - led[1], 1 ])
       rotate([0,0, 360/8/2])
@@ -194,5 +241,8 @@ module BoxPrint(){
 
 //MainProfileInnerHalf();
 //MainProfile();
-//Box();
-BoxPrint();
+//translate([0,0,1]) color("black") BraceProfileInitial();
+//translate([0,0,1]) color("black") BraceProfileFinal();
+//Brace();
+Box();
+//BoxPrint();